Seiko Cal. 5630 - 450

The Seiko 5630-450 represents an important milestone in Seiko's 1983 lineup. Powered by the 5630 caliber with 28j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-e8b841e67119]

Also known as: Sumo, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1983

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